message: fix(tests): rework offset parameter for correct count day diffs
diff: -import { cloneWithOffset, getUTCOffset } from '../units/offset';
  +import { cloneWithOffset, getDateOffset, getUTCOffset } from '../units/offset';
  import { DateParsingConfig } from '../create/parsing.types';
  import { UnitOfTime } from '../types';
  import { absFloor } from '../utils';
  @@ -21,7 +21,7 @@ export function diff(date: Date, input: Date,
  return NaN;
  }
  - // const zoneDelta = (getUTCOffset(input, dateConfig) - getUTCOffset(date, dateConfig)) * 6e4;
  + const zoneOffset = (getDateOffset(input) - getDateOffset(date)) * 6e4;
  const zoneDelta = isNumber(config._zoneDelta)
  ? config._zoneDelta * 6e4
  : (getUTCOffset(input, config) - getUTCOffset(date, config)) * 6e4;
  @@ -47,7 +47,7 @@ export function diff(date: Date, input: Date,
  output = (date.valueOf() - that.valueOf()) / 36e5;
  break; // 1000 * 60 * 60
  case 'day':
  - output = (date.valueOf() - that.valueOf() - zoneDelta) / 864e5;
  + output = (date.valueOf() - that.valueOf() - (zoneDelta === 0 ? zoneOffset : zoneDelta)) / 864e5;
  break; // 1000 * 60 * 60 * 24, negate dst
  case 'week':
  output = (date.valueOf() - that.valueOf() - zoneDelta) / 6048e5;
  