Use a TZ-aware datetime instead of time.strftime, for example:

from datetime import datetime, timezone

dt = datetime(2025, 4, 28, 5, 13, 45, tzinfo=timezone.utc)
print(dt.strftime('%a, %d %b %Y %I:%M %p %Z %z'))
# Mon, 28 Apr 2025 05:13 AM UTC +0000