HSR 4.5 Release Date & Maintenance End Time

The Astral Express is about to pull into another station. Honkai: Star Rail version 4.5 is set to arrive on August 25, 2026, and while this patch runs a little shorter than usual, it packs a punch with the debut of Robin Summeretto and a rerun for Hyacine. If you're planning your pulls or just want to know when the servers will be back up, here's everything you need to know about the update schedule and banner timeline.

This version is a bit of an anomaly—it lasts less than six weeks, which means Trailblazers will have a tighter window to farm materials and decide on their pulls. For the latest Honkai: Star Rail news and guides, keep this page handy as we break down the maintenance times, release schedule, and what the banners mean for your roster.

At a Glance

• Version 4.5 release: August 25, 2026, at 11:00 PM ET (UTC-4)
• Maintenance duration: 5 hours
• Phase 1 banners: Robin Summeretto (debut) and Hyacine (rerun)
• Phase 2 banners: Aventurine SP and Ashveil (rerun)
• Version end: September 27, 2026 (varies by timezone)

Robin Summeretto Banner Release Date

Robin Summeretto makes her debut in the first half of version 4.5, running from August 25, 2026 to September 12, 2026. She's a Wind-Remembrance character, and her kit is designed to synergize with Hyacine, who also gets a rerun in the same phase. If you've been saving for a support that can elevate your team's damage output, this banner is worth a look.

The full Phase 1 rate-up list includes:

• Robin Summeretto (Wind-Remembrance)
• Hyacine (Wind-Remembrance)
• Dan Heng (Wind-Hunt)
• Qingque (Quantum-Erudition)
• Gallagher (Fire-Abundance)

Phase 2 will feature Aventurine SP and Ashveil, though exact dates are not yet confirmed. Based on the standard schedule, expect them to run from mid-September until the patch ends.

HSR 4.5 Maintenance Schedule

Despite the shorter patch duration, the maintenance window remains a standard five hours. Here's when the servers will go down and come back up in your timezone:

Timezone	Maintenance Starts	Maintenance Ends
PT (UTC-7)	Aug 25, 03:00 PM	Aug 25, 08:00 PM
MT (UTC-6)	Aug 25, 04:00 PM	Aug 25, 09:00 PM
CT (UTC-5)	Aug 25, 05:00 PM	Aug 25, 10:00 PM
ET (UTC-4)	Aug 25, 06:00 PM	Aug 25, 11:00 PM
GMT (UTC+0)	Aug 25, 10:00 PM	Aug 26, 03:00 AM
BST (UTC+1)	Aug 25, 11:00 PM	Aug 26, 04:00 AM
CET (UTC+2)	Aug 26, 12:00 AM	Aug 26, 05:00 AM
IST (UTC+5:30)	Aug 26, 03:30 AM	Aug 26, 08:30 AM
SGT (UTC+8)	Aug 26, 06:00 AM	Aug 26, 11:00 AM
JST (UTC+9)	Aug 26, 07:00 AM	Aug 26, 12:00 PM
AEST (UTC+10)	Aug 26, 08:00 AM	Aug 26, 01:00 PM

Plan your farming and daily login accordingly—maintenance usually means a few hours of downtime, so it's a good time to catch up on other games or theorycraft your next team.

HSR 4.5 Release Date & End Time

The update goes live right after maintenance ends. Here's the full release and end schedule for version 4.5:

Timezone	Release Date	End Time
PT (UTC-7)	Aug 25, 08:00 PM	Sep 27, 03:00 PM
MT (UTC-6)	Aug 25, 09:00 PM	Sep 27, 04:00 PM
CT (UTC-5)	Aug 25, 10:00 PM	Sep 27, 05:00 PM
ET (UTC-4)	Aug 25, 11:00 PM	Sep 27, 06:00 PM
GMT (UTC+0)	Aug 26, 03:00 AM	Sep 27, 10:00 PM
BST (UTC+1)	Aug 26, 04:00 AM	Sep 27, 11:00 PM
CET (UTC+2)	Aug 26, 05:00 AM	Sep 28, 12:00 AM
IST (UTC+5:30)	Aug 26, 08:30 AM	Sep 28, 03:30 AM
SGT (UTC+8)	Aug 26, 11:00 AM	Sep 28, 06:00 AM
JST (UTC+9)	Aug 26, 12:00 PM	Sep 28, 07:00 AM
AEST (UTC+10)	Aug 26, 01:00 PM	Sep 28, 08:00 AM

Note that the end time is when the patch concludes, so you'll have until then to finish any limited-time events and use your Trailblaze Power efficiently.

Should You Pull for Robin Summeretto?

Robin Summeretto is shaping up to be a strong addition to Remembrance teams, especially if you already have Hyacine. Her kit appears to focus on enabling follow-up attacks and boosting team-wide damage, which could make her a staple in Memory of Chaos and Pure Fiction clears. For F2P players, the question is whether she's worth the jades over saving for future units.

If you're missing a reliable support for your Remembrance DPS, Robin Summeretto is a solid investment. Her synergy with Hyacine is particularly notable—together, they can create a loop of buffs and healing that keeps your team alive through tough content. However, if your roster already has strong supports like Ruan Mei or Sparkle, you might want to wait for a character that fills a different niche.

For low-spenders, consider your current team compositions. Robin Summeretto's value increases if you're struggling with endgame content, but if you're comfortable with your clears, saving for a future DPS or limited support might be better. As always, pull for who you like, but if you're meta-focused, she's a strong contender.

Teams & Synergies

Robin Summeretto and Hyacine are a natural pair, but they can also slot into existing teams. Here are a few compositions to consider:

• Remembrance Core: Robin Summeretto + Hyacine + a main DPS (like Aglaea or Castorice) + a flex support. This team focuses on maximizing Remembrance buffs and keeping the party healthy.
• Hypercarry Support: Robin Summeretto can replace a traditional buffer in teams like Kafka DoT or Jingliu hypercarry, providing additional damage amplification.
• F2P Friendly: Robin Summeretto + Gallagher + Dan Heng + Qingque works if you're on a budget, though you'll lose some of the premium synergy.

For endgame content, the key is to build around Toughness reduction and Weakness Break efficiency. Robin Summeretto's kit likely includes mechanics that reward breaking enemies, so pairing her with characters who can apply Break Effect debuffs will maximize her output.

Final Thoughts

Version 4.5 is a compact but impactful update. With Robin Summeretto debuting and Hyacine returning, there's plenty to look forward to. The shorter patch duration means you'll need to be efficient with your resources, but the banner lineup offers strong options for both new and veteran players.

Make sure to log in after maintenance to grab the free rewards and start planning your pulls. For more detailed guides on Robin Summeretto's best builds and teams, check out our Ashveil Best Build In Honkai Star Rail and other related articles.