Text 38]
Calculation of Time, from the Atom
435
of Bharata;  vārāhaḥ —Vārāha;  iti —thus;  vikhyātaḥ —is celebrated;  yatra —in which;  āsīt —appeared;  śūkaraḥ —hog shape;  hariḥ —the Personality of Godhead.
TRANSLATION
O descendant of Bharata, the first millennium in the second half of the life of Brahmā is also known as the Vārāha millennium because the Personality of Godhead appeared in that millennium as the hog incarnation.
PURPORT
The different millenniums known as the Brāhma, Pādma and Vārāha kalpas appear to be a little puzzling for the layman. There are some scholars who think these  kalpas  to be one and the same. According to Śrīla Viśvanātha Cakravartī, the Brāhma-kalpa in the beginning of the first half appears to be the Pādma-kalpa. We can, however, simply abide by the text and understand that the present millennium is in the second half of the duration of the life of Brahmā.
TEXT 38
कालोऽयं द्विपरार्धाख्यो निमेष उपचर्यते । अव्याकृतस्यानन्तस्य ह्यनादेर्जगदात्मनः ॥३८॥
kālo'yaṁ dviparārdhākhyo nimeṣa upacaryate avyākṛtasyānantasya hy anāder jagad-ātmanaḥ
kālaḥ —eternal time;  ayam —this (as measured by Brahmā's duration of life);  dvi-para-ardha-ākhyaḥ —measured by the two halves of Brahmā's life;  nimeṣaḥ —less than a second;  upacaryate —is so measured;  avyākṛtasya —of one who is unchanged;  anantasya —of the unlimited;  hi —certainly;  anādeḥ —of the beginningless;  jagat-ātmanaḥ —of the soul of the universe.
TRANSLATION
The duration of the two parts of Brahmā's life, as above mentioned, is calculated to be equal to one nimeṣa [less than a second] for the Supreme Personality of Godhead, who is unchanging and unlimited and is the cause of all causes of the universe.