Something like this?

Storeno >= 100 && Storeno <= 400 ? DateAdd("hh",ABS(DateDiff("hh", GetDate(), GetUTCDate()) - 5), DateAdd("mm", -7.00 * 60, GetUTCDate())) : DateAdd("hh",ABS(DateDiff("hh", GetDate(), GetUTCDate()) - 5), DateAdd("mm", -8.00 * 60, GetUTCDate()